Invalid Argument/Examples/I am Not Famous
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Example of Invalid Argument
The following is an invalid argument with true premises and a true conclusion:
- If I am President then I am famous.
- I am not President.
- Therefore I am not famous.
Proof
This is an example of Denying the Antecedent.
It does not follow that just because I am not President then I am not famous.
The fact that I am indeed not famous is independent of the argument.
$\blacksquare$
Sources
- 1973: Irving M. Copi: Symbolic Logic (4th ed.) ... (previous) ... (next): $1$ Introduction: Logic and Language: $1.3$: Truth and Validity